Little Rock District News Releases

MKARNS Nav Notice SWL 26-32 Scheduled Lock Closure Update

Press Operations — Thu, 10 Sep 2026 21:09:53 GMT

The partial closure of James A. Trimble Lock and Dam No. 13 (NM 292.8) has been extended through November 18, 2026.

MKARNS Nav Notice SWL 26-31 Channel Obstruction Cleared NM 119

Press Operations — Fri, 21 Aug 2026 15:42:20 GMT

The river obstruction at NM 119 (between Broadway and Main Street Bridges) has been removed. The area is clear for all transit. Ref: Navigation Notice SWL 26-30.

MKARNS Nav Notice SWL 26-30 Caution Advisory NM 119

Press Operations — Wed, 19 Aug 2026 20:41:59 GMT

Mariners are advised that there is an obstruction in the river near the left descending side of the navigation channel at NM 119, between the Broadway and Main Street Bridges. The obstruction appears to be a derelict wooden pile protruding just above the waterline. Crews are mobilizing to investigate the obstruction and will attempt to remove it tomorrow, August 20, 2026.

MKARNS Nav Notice SWL 26-29 Lock 10 Early Closure

Press Operations — Tue, 18 Aug 2026 16:54:34 GMT

Mariners are advised that due to a critical construction activity related to the 110 ft. stoplog conversions, the daytime closure at Dardanelle Lock (No. 10) NM 205.5 will begin at 3:00 a.m. on Thursday August 20th, 2026, and end at 3:00 p.m. on Thursday August 20th, 2026. To offset the early closure start, the lock will open early to traffic at 4:00 p.m. on Wednesday August 19th, 2026.

MKARNS Nav Notice SWL 26-27 Lock 13 Early Closure

Press Operations — Tue, 28 Jul 2026 14:58:19 GMT

Mariners are advised that due to a critical construction activity related to the 110 ft. stoplog conversions, the daytime closure at James W. Trimble Lock (No. 13) NM 292.8 will begin at 5:00 a.m. on Monday August 3rd, 2026, and Friday August 7th, 2026.

MKARNS Nav Notice SWL 26-26 Lock 1 Repair Closure

Press Operations — Wed, 22 Jul 2026 19:46:23 GMT

Mariners are advised that Norrell Lock (No. 1) NM 10.3 will be closed to traffic beginning at 6:00 a.m. until 2:00 p.m. on July 29th, 2026. The lock closure is required to facilitate concrete repair of the lock parapet wall.

MKARNS Nav Not 26-25 Lock 13 Early Closure

Press Operations — Wed, 22 Jul 2026 19:25:20 GMT

Mariners are advised that due to a critical construction activity related to the 110 ft. stoplog conversions, the daytime closure at James A. Trimble Lock (No. 13) NM 292.8 will begin at 5:00 a.m. on Wednesday July 29th, 2026.

MKARNS Nav Notice 26-24 Multiple Location Locking Instructions

Press Operations — Wed, 22 Jul 2026 19:16:36 GMT

SPECIAL LOCKING INSTRUCTIONS MULTIPLE LOCATONS MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM Due to ongoing construction at the following locations on the McClellan-Kerr Arkansas River Navigation System •Murry Lock (No.7) NM 125.4 •Toad Suck Ferry Lock (No. 8) NM 155.9 •Arthur V. Ormond Lock (No. 9) NM 176.9 •Dardanelle Lock (No. 10) NM 205.5 •Ozark Jetta-Taylor Lock (No. 12) NM 256.9 •James W. Trimble Lock (No. 13) NM 292.8

MKARNS Nav Notice 26-23 Lock 1 Intermittent Delays

Press Operations — Mon, 13 Jul 2026 15:20:35 GMT

Mariners should expect to experience intermittent delays at Norrell Lock (No. 1) NM 10.3 July 13, 2026 – July 17, 2026, between the hours of 6:00 a.m. and 6:00 p.m. The intermittent delays are required to facilitate work on the hydraulic system.

MKARNS Nav Notice 26-22 Intermittent Delays (Clinton Presidential Park Bridge NM 118.2)

Press Operations — Mon, 22 Jun 2026 20:57:12 GMT

Mariners may experience intermittent delays at the Clinton Presidential Park Bridge (NM 118.2). These delays are necessary to facilitate the reconstruction of an upstream bridge pier protection cell. The contractor is expected to begin mobilizing equipment this week with construction beginning in roughly 10 days. The project is expected to take up to six months to complete.

MKARNS Nav Notice SWL 26-21 Lock Cutoff Times for Towing Configurations

Press Operations — Sat, 13 Jun 2026 17:47:00 GMT

Mariners are advised that starting June 15th, 2026, and continuing until this Navigation Notice is rescinded, the following lockage cutoff times with corresponding tow configurations will be in place at Murray Lock (No. 7) NM 125.0, Toad Suck Lock (No. 8) NM 155.9, Arthur V. Ormond Lock (No. 9) NM 176.9, Dardanelle Lock (No. 10) NM 205.5, Ozark - Jeta Taylor Lock (No. 12) NM 256.8, and James W. Trimble Lock (No. 13) NM 292.8.

MKARNS Nav Notice SWL 26-20 Caution Advisory NM 291.6 I-49 Bridge

Press Operations — Tue, 09 Jun 2026 13:55:10 GMT

Mariners are advised that starting June 15th, 2026, bridge construction activities will continue at NM 291.6, downstream of James W. Trimble Lock and Dam (No. 13). This work will be on the bridge pier adjacent to the navigation channel on the left descending side.

MKARNS Nav Notice SWL 26-19 Lock 10 Intermittent Delays

Press Operations — Mon, 18 May 2026 16:25:56 GMT

Mariners may expect to experience intermittent delays at Dardanelle Lock (No. 10) NM 205.5 on June 9th, 2026 – June 11th, 2026. Intermittent delays are required to perform a survey of the lock chamber.

MKARNS Nav Notice SWL 26-18 Lock 07 and 08 Intermittent Delays

Press Operations — Mon, 04 May 2026 15:56:00 GMT

Mariners may experience intermittent delays at Murray Lock (No. 7) NM 125.4 and Toad Suck Lock (No. 8) NM 155.9 on May 4th, 2026 through June 15th, 2026, between the hours of 7:00 a.m. and 5:30 p.m. daily. The intermittent delays are required to facilitate dredging and dive inspections in preparation of the 110’ stoplog conversions

MKARNS Nav Notice SWL 26-17 Scheduled Lock Closure (Multiple Locations)

Press Operations — Wed, 29 Apr 2026 15:08:42 GMT

A partial lock closure is scheduled for James A. Trimble Lock (No.13) NM 292.8, Ozark Jetta-Tayor Lock (No. 12) NM 256.9, Dardanelle Lock (No. 10) NM 205.5, Arthur V. Ormond Lock (No. 9) NM 176.9, Toad Suck Lock (No. 8) NM 155.9, and Murray Lock (No. 7) NM 125.4 beginning June 15th, 2026, through September 30th, 2026. During this time, the Locks will be closed daily between the hours of 7:00 a.m. and 7:00 p.m. The Locks will be opened to traffic each night between the hours of 7:00 p.m. and 7:00 a.m., however a 70-ft width restriction will be in place.

MKARNS Nav Notice SWL 26-16 Caution Advisory NM 291.6 I-49 Bridge

Press Operations — Tue, 21 Apr 2026 20:02:32 GMT

Mariners are advised that bridge construction falsework is located in the river at NM 291.6, downstream of James W. Trimble Lock and Dam (No. 13). These obstructions will be in place intermittently during the I-49 Bridge construction and may be submerged depending on river conditions.

MKARNS NAVNOT 26-15 Lock 9 Repair Closure

Press Operations — Tue, 14 Apr 2026 18:07:05 GMT

Mariners are advised that Arthur V. Ormond (No. 9) NM 176.9 will be closed to traffic beginning at 6:00 a.m. until 6:00 p.m. on April 21st, 2026. The lock closure is required to facilitate ongoing work on the miter gate operational equipment.

MKARNS Nav Notice 26-14 Lock 7 Tow Haulage Return to Service

Press Operations — Tue, 31 Mar 2026 16:20:19 GMT

The tow haulage equipment at Murray Lock (No. 7) NM 125.4 has returned to service.

MKARNS Nav Notice No. 1-2026

Press Operations — Tue, 10 Mar 2026 14:23:00 GMT

1. As a result of partnering efforts with navigation stakeholders, a consolidated Notice to Navigation Interests has been prepared for the McClellan-Kerr Arkansas River Navigation System (MKARNS). The intent is to provide consistency by reviewing and informing current district regulations with a joint notice that will be updated annually. The notice is applicable to the Little Rock (SWL) and Tulsa (SWT) Districts. 2. The basic document includes policies of general application to the described areas within the Southwestern Division, while the appendices cite policies applicable to MKARNS projects from Navigation Mile (NM) 0 to NM 445. Also included as an appendix is the Code of Federal Regulations containing the "Little Red Book" of navigation regulations prescribed by the Secretary of the Army. 3. Comments on how we may improve this notice may be sent to: U.S. Army Corps of Engineers - Little Rock District, ATTN: CESWL-OP-OM, 700 W. Capitol Avenue, P.O. Box 867, Little Rock, AR 72203-0867 or you may e-mail CESWL-OP-OM@usace.army.mil.

MKARNS Nav Notice SWL 26-12 Lock 2 Tow Haulage Return to Service

Press Operations — Thu, 05 Mar 2026 15:16:42 GMT

The tow haulage equipment at Lock No. 2 (NM 13.3) has been repaired and returned to service.